Electro Sim vs Perfboard Lab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Electro Sim
Learn and teach basic electronics with an intuitive circuit simulator. Drag, wire, and combine components on a real-time canvas to visualize current flow and understand DC circuit concepts.
- Intuitive drag-and-drop canvas
- Real-time DC simulation with current visualization
- Extensive component library with search
- Build and reuse custom components
- Save, load, and export circuits
- Undo/redo functionality
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Build a circuit. See current flow. Understand how it works. Electro Sim turns electronics into something you can explore on your iPhone or iPad. Place components, connect wires, and run a simulation to see how your circuit responds. Whether you are learning the basics, preparing a classroom demonstration, or testing an idea, start with a working example or build your own. BUILD ON A CANVAS OR A BREADBOARD Create schematic circuits with drag-and-drop components and flexible wiring, or try a virtual breadboard with components and jumper wires. Zoom in to make connections, rotate parts, and use undo and redo as you experiment. SEE WHAT CHANGES WHEN YOU CHANGE THE CIRCUIT Follow animated current flow, inspect voltage and current readings, and use a virtual multimeter to explore circuit behavior. Adjust component values, toggle switches, or advance the simulation one step at a time to connect cause and effect. LEARN THROUGH WORKING EXAMPLES Explore LED circuits, capacitor charging, logic gates, adders, counters, seven-segment displays, and traffic lights. Selected examples include guided steps that help you investigate the circuit and check your understanding. FIND THE PARTS YOU NEED Browse a searchable component library with resistors, capacitors, inductors, diodes, LEDs, transistors, switches, buzzers, logic gates, and signal sources. Component descriptions and pin information help you decide what to use and how to connect it. TURN CIRCUIT BLOCKS INTO REUSABLE MODULES With Pro, create custom components from circuit blocks, define their pins, and reuse them in new projects. Build up a collection of modules as your ideas grow. Custom component creation and use require an active Pro subscription. SAVE AND SHARE YOUR WORK Save projects to revisit later, exchange circuit files in JSON format, and export circuit snapshots or PDF reports with readings and notes for learning and discussion. Designed for iPhone and iPad, with light and dark appearances and English, Simplified Chinese, and Traditional Chinese interfaces. Start with one LED, then see where your curiosity takes you.
Perfboard Lab
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Understand electronics by trying it out: Perfboard Lab turns your iPhone, iPad or Mac into an electronics lab. Build a circuit and switch on the power. Right away you see what happens: LEDs light up, buzzers beep, motors turn and hum. And if your maths was off: it smokes, it sparks and the part burns out – without any real damage. SEE WHAT HAPPENS, INSTANTLY • Every change is computed instantly with real physics • Overloaded parts smoke in four levels until they burn out • The analysis explains in plain words what is wrong: an LED the wrong way round, a missing series resistor, a short circuit, an open circuit MEASURE LIKE IN A REAL LAB • Multimeter: voltage, current and power at every part • Oscilloscope: voltage and current over time OVER 20 REAL PARTS • DC voltage source, AC voltage source, current source, solar module and breadboard power supply • Resistors, potentiometers, ceramic and electrolytic capacitors, inductors, switches • Diodes and Zener diodes, NPN and PNP transistors, N- and P-channel MOSFETs, relays, op-amps, voltage regulators and Timer NE555 • LEDs in six colours, an incandescent lamp, a buzzer with a real tone and a motor whose hum matches its turning • Sensors: photoresistor, NTC and PTC, with the brightness taken from the camera if you like JUST LIKE ON THE WORKBENCH • Draw wires with the pen – straight wires with bends and branches • Perfboard, with Perfboard Lab Pro also stripboard with cuttable strips and breadboard as used with Arduino • Copy parts with all their values; text labels annotate your circuit • Real 2.54 mm grid: what fits in the app fits on the real board • Bill of materials with every part and the length of hookup wire • With Perfboard Lab Pro you see your circuit in the 3D view: real parts on the board that you turn, tilt and measure PERFECT FOR SCHOOL AND CLASS • A guided tutorial starts with an LED that burns out and shows you how to find the right series resistor • A free task at your level every day: build, complete, adjust or rescue, with a time limit without Perfboard Lab Pro • AI-assisted tasks that suit your level and explanations step by step on the board (Perfboard Lab Pro) • Lots of ready-made examples: from an LED with a series resistor to logic circuits, transistors and op-amps • The formula collection calculates with the measured values of your parts and shows where each number comes from • Teachers pass their default settings on to the whole class as a file FOR EVERYONE • In many languages and usable with VoiceOver, Voice Control and Apple Pencil • No ads, no tracking FREE The perfboard with almost all parts and their examples, the daily task, text labels, the instruments and the simulation are free. A circuit can have up to 7 parts. PERFBOARD LAB PRO With “Perfboard Lab Pro” you save as many circuits as you like and keep working on iPhone, iPad and Mac. You export them as PDF with a bill of materials and share them with others. Plus circuits with more than 7 parts, op-amp, voltage regulator, Timer NE555, motor, Zener diode, current source, solar module and the sensors with their examples, the stripboard and the breadboard with their examples, AI-assisted tasks and explanations, and the 3D view. • Perfboard Lab Pro is available as a subscription (yearly, monthly, weekly). The App Store shows the prices before you buy. • A subscription renews automatically unless it is cancelled at least 24 hours before the end of the period. Payment is charged to your Apple Account. You can cancel at any time in your Apple Account settings under “Subscriptions”. • Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ • Privacy policy: https://pascalschroeer.github.io/PerfboardLab_PrivacyPolicy/ Legal notice: https://pascalschroeer.github.io/PerfboardLab_PrivacyPolicy/#legal-notice
Screenshots
Verdict
The clearest difference is update cadence: Perfboard Lab at every 10 days against Electro Sim's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Electro Sim sells 2 one-off in-app purchases and Perfboard Lab sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Electro Sim ships an update every 4 months, Perfboard Lab every 10 days. The most recent releases landed on November 11, 2026 and November 13, 2026 respectively.
| Parameter | Electro Sim | Perfboard Lab |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 4 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 19 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | 剑龙 刘 | Pascal Schroeer |
In-app purchases
Electro Sim
- Monthly$0.99
- Yearly$3.99
Perfboard Lab
- Perfboard Lab Pro$1.997 Days
- Perfboard Lab Pro$3.991 Month
- Perfboard Lab Pro$22.991 Year
Questions
Is Electro Sim free?
Is Perfboard Lab free?
Do Electro Sim or Perfboard Lab have ads?
Which is updated more often, Electro Sim or Perfboard Lab?
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